Presidential campaign events are always orchestrated stage shows, and  reporters are used to campaigns doing their best to manipulate the media and  control the day’s narrative.

But my experience Thursday at a Michelle Obama event in Montgomery County,  Pennsylvania was a first.

Obama campaign operatives barred me from talking to voters outside the event,  to the point of interfering with my interviews and grabbing my microphone.

You can hear some audio of one encounter by playing my radio story above.

Here’s what happened:

During the two-hour wait for the rally to begin, I wanted to talk to some of  the supporters attending the event. Since I couldn't leave the media pen at the  Upper Dublin High School gymnasium, I told press aide Devora Kaye I'd like to go  and find some outside.

Kaye, who is exceptionally pleasant, said I could go out and come back in,  but that I couldn't talk to people waiting in line for the event. When I asked  why, she mentioned security and crowd-control concerns, which honestly made no  sense. Everyone coming into the building would have to go through security again  anyway.

I went outside. The line was short and things were peaceful. The only members  of the public around to talk to were the people in line to get into the rally,  so that’s where I went.

Oh, no you don't

I was speaking to a very enthusiastic Obama supporter named Corinne Dieterle,  when I was interrupted by a young man wearing a campaign staff tag telling me I  couldn’t be doing this.

This is outside, in front of a public high school.

“You can't be doing this in line,” he said.

“Why is that?” I asked.

No answer. “I’m sorry,” I said. “I can't do what in line?”

“You can't be interviewing people in line,” he said.

I asked him repeatedly who he was and why interviews were banned.

Those inquiries were met with silence. At one point he grabbed my microphone,  and released it when I asked him to.

I decided to try speaking to a couple who were approaching, but not yet in  the line. A different campaign operative approached and the same thing happened.  He also refused to identify himself.

Later, inside the gym, I was in the assigned media pen and chatting across  the rope line with Dieterle, who I'd tried to interview earlier. Another Obama  press aide, Desiree Peterkin Bell came and politely told me that wasn't  permitted.

Obamacare Mandate: Sterilize 15-Year-Old Girls for Free--Without  Parental Consent By Sabrina Gladstone, CNS  News August 10, 2012

(CNSNews.com) - Thanks to an Obamacare regulation that took  effect on Aug. 1, health care plans in Oregon will now be required to provide  free sterilizations to 15- year-old girls even if the parents of those girls do  not consent to the procedure.

Health and Human Services Secretary Kathleen Sebelius finalized the  regulation earlier this year.

It says that all health care plans in the United States--except those  provided by actual houses of worship organized under the section of the Internal  Revenue Code reserved for churches per se--must provide coverage, without  cost-sharing, for sterilizations and all Food and Drug Administration-approved  contraceptives to “all women with reproductive capacity.”

In practical terms, "all women with reproductive capacity" means girls as  young as about 12. That, according to the National Institutes of Health, is when  girls usually start menstruating.